In a medical context, 'gesneuveld' may have a specific meaning.
More likely 'gesneuveld' means the nasobiliary drain for some reason was no longer in place, was no longer in the correct position.
It should be repositioned or replaced by another one.
This is what 'gesneuveld' usually means when they say the drip is 'gesneuveld'.
For example:
Terwijl ik patiënt A onderzoek, gaat opnieuw mijn pieper. De afdeling: er is een infuus gesneuveld en de patiënt moet nog antibiotica krijgen. Kan ik een nieuwe komen prikken?
The IV catheter got out of the vein.
http://www.artsenauto.nl/voorrecht/The drain has several lateral orifices at the distal end for the effective drainage of the bile duct, and is radio-opaque so that its position can be monitored.
http://tinyurl.com/l9djw22